Haresh Chand, Khurshid Ahmed Abbasi, Sikandar Ali Shaikh, Saeed Ahmad Sheikh, Paras.
Chemical composition of urinary stones, in stone passers at Larkana.
Pak J Med Health Sci Jan ;5(2):262-4.

Objective: To determine the chemical composition of spontaneously passed urinary stones. Study design: Descriptive. Place and duration: The study was conducted at public and private Pathology laboratories of Larkana from Jan: 2009 to Dec: 2010. Patients and methods: Stones of 278 patients were analyzed chemically, using titrimetric method for estimation of calcium and colorimetric method for uric acid and other anions. Results: Urinary stones of persons ranging in age from 2 to 72 years were determined, having a male to female ratio 2.8:1, the frequency of compounds in stones was calcium oxalate (33.1%), uric acid (18.3%) and struvite stone (7.9%) while percentage of mixed calcium and urate stones were 18% and 22.7% respectively. Conclusion: Chemical composition of spontaneously passed urinary stones is not different from stones retrieved through pyelolithotomy or by extra corporeal shock wave lithotripsy (ESWL).

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